add go format checking

.github/workflows/go.yml

@@ -1,5 +1,5 @@
-# This workflow will build a golang project
-# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+# https://github.com/marketplace/actions/check-code-formatting-using-gofmt
 
 name: Go
 
@@ -11,6 +11,7 @@ on:
 
 jobs:
 
+  
   build:
     runs-on: ubuntu-latest
     steps:
@@ -21,6 +22,12 @@ jobs:
       with:
         go-version: 1.19
 
+    - name: Check formatting
+      uses: Jerome1337/gofmt-action@v1.0.5
+      with:
+        gofmt-path: './...'
+        gofmt-flags: '-l -d'
+
     - name: Build
       run: go build -v ./...